Deaeration apparatus for deaerating water used during ultrasonic focusing tumour treatment

ABSTRACT

The present invention relates to a deaeration device for deaerating water used during ultrasonic focusing tumour treatment. The said deaeration device includes water purifiers ( 2 ), a vacuum pump ( 32 ), a water heater ( 6 ), electromagnetic valves ( 3, 5, 7 - 9, 19 - 23, 25 - 26, 30 - 31 ), water tanks ( 10, 18 ), content gauges ( 11, 15, 17 ), a thermometer ( 13 ), vacuum gauges ( 12, 16 ), and an aqueous capsule ( 24 ). The said vacuum pump ( 32 ) is a water jet vacuum pump, and there are two water tanks ( 10, 18 ). The vacuum pump ( 32 ) is connected to the tops of two water tanks ( 10,18 ) via a valve assembly composed of four electromagnetic valves ( 19 - 22 ). Two atomizing nozzles ( 14 ) are respectively provided at the water inlets on the tops of two water tanks ( 10,18 ).

TECHNICAL FIELD

The present invention relates to a deaeration device for deaeratingwater used during ultrasonic focusing tumour ablation treatment, whichbelongs to the field of medical equipments.

BACKGROUND ART

The purpose of water processing for water used during ultrasonicfocusing tumour ablation treatment is to deaerate said water, i.e. toextract air solved therein out of said water, currently by means ofwater circulation vacuum deaeration, in which said water is circulatedin a vacuum environment and the air solved in the water is separated outor deaerated thereby. Presently, the vacuum pumping unit in a waterprocessing system for water used during ultrasonic focusing tumourablation treatment uses a slide valve pump-Roots vacuum pump set or awater cycling vacuum pump-Roots vacuum pump set. The water circulationis made running by the water pump, since the slide valve pump is a kindof oil-seal vacuum pump and water is processed therein, the waterundergoes vapourization and condensation, thus often there is watercoming into the slide valve pump, causing contamination to the oil. Thewater cycling pump makes quite strong noise, and these two kinds ofpumps have complicated structures and high costs. The water circulationin those water processing systems relies on their water pumps, whichoperate at very low efficiencies under vacuum environment, and of whichthe water outlet has to be put below water level otherwise the waterwill not come out. Even if the water outlet is put below water, thewater pump can operate only when the water has been deaerated to someextent. And the water pump cannot maintain normal operation during thewhole deaerating process, and putting the water outlet within the waterdoes no good to the deaeration. Furthermore, the deaeration is not veryeffective by the single time deaerating using just a single water tank.

PURPOSE OF THE INVENTION

To overcome said shortcomings of the prior art, the present inventionprovides a deaeration device for deaerating water used during ultrasonicfocusing tumour ablation treatment, which applies a water jet vacuumpump and utilizes alternating vacuum suctions of twin water tanks, andin which the water circulation is caused by the atmospheric pressure andatomizing nozzle is utilized for spraying the water at the outletthereof.

SUMMARY OF THE INVENTION

The technical solution for the deaeration device of the presentinvention is described as the following, wherein a tap water main inletis connected to a water purifier and a vacuum pump separately, thecommon pipe for the cold and heated water from the water purifier and awater heater is connected to a water tank via a electromagnetic valve,the vacuum pump is connected to the top of the water tank viaelectromagnetic valves and a vacuum switching valve, there are contentgauges, a thermometer and vacuum gauges set on the water tank, and thebottom of the water tank is connected to an aqueous capsule viaelectromagnetic valves and a water pump, this deaeration device ischaracterized as: said vacuum pump is a water jet vacuum pump; saidwater tank is comprised of twin tanks: water tank A and water tank B,and a water cycling mechanism with twin-tank alternating vacuum suctionsis formed by said water jet vacuum pump in connection with said watertank A and water tank B at their tops via a valve assembly composed offour electromagnetic valves; and two atomizing nozzles are provided atthe water inlets respectively on the tops of said two water tanks.

In comparison with a slide valve pump, the water jet vacuum pumputilized in the present invention has the advantages of simplestructure, reliable operation, low noise, no contamination, and longlifetime. In the water cycling mechanism with twin-tank alternatingvacuum suctions, the water circulation is pushed by atmospheric pressurewith alternating vacuum suctions of said twin tanks, no mechanicalpumping is needed here, thus its operation is simple and reliable, andthe water route and air route are both controlled with electromagneticvalves, which is accessible by automation. Instead of being put belowwater, both water inlets are set respectively at the tops of the twinwater tanks in the form of atomizing nozzles, thus the water coming outis atomized and sprayed out immediately as tiny foggy droplets intovacuum environments in each of the tanks, i.e. the area for the water tocontact the vacuum environment is increased enormously in thesedroplets, and the deaerating is largely promoted during the fastmovement of those foggy droplets. Furthermore, water in the lower partsof the tanks is scoured and stirred by these foggy droplets in highspeed, facilitating a second time deaeration of these water in the lowerparts of the water tanks.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a scheme diagram of the principle of the deaeration device fordeaerating water used during ultrasonic focusing tumor ablationtreatment according to the present invention;

FIG. 2 is a scheme diagram of the structure of the water tank A.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIGS. 1 and 2 showing the deaeration device of the presentinvention, tap water main inlet 1 is connected to water purifiers 2 anda vacuum pump 32 separately, the common pipe 4 for the cold and heatedwater from the water purifiers 2 and a water heater 6 is connected to awater tank A 10 via a electromagnetic valve 7, the inlet of the vacuumpump 32 is connected to the tops of two water tanks A 10 and B 18 via avacuum switching valve 29 and electromagnetic valves 20 and 22, thereare content gauges 11, 15, and 17, a thermometer 13, and vacuum gauges12 and 16 set separately on the tops of both water tanks, and the bottomof the water tank B 18 is connected to an aqueous capsule 24 via aelectromagnetic valve 23, a water pump 28, and a electromagnetic valve25, said deaeration device is characterized in that said vacuum pump 32is a water jet vacuum pump; said water tanks are comprised of twintanks: water tank A 10 and water tank B 18, and a water cyclingmechanism with twin tank alternating vacuum suctions is formed by saidwater jet vacuum pump in connection with said water tank A 10 and watertank B 18 at their tops via a valve assembly composed of fourconstant-open electromagnetic valves 19, 20, 21, and 22; and twoatomizing nozzles 14 are provided at the water inlets on the tops ofwater tank A 10 and water tank B 18, respectively.

The operation of said deaeration device can be described as follows:referring to FIG. 1, incoming water through the tap water main inlet 1is divided into two routes, one route goes to the vacuum pump 32 as itsoperation water, the other is directed to the water purifiers 2 to befiltered therein and then to the water heater 6, and it depends on thetemperature inside water tank A 10 as measured by thermometer 13 set onthe top of tank A 10 whether to input cold water or hot water into watertank A 10, cold purified water from said purifier 2 will be sentdirectly into water tank A 10 via electromagnetic valve 7 when saidtemperature is high and the electromagnetic valve 3 is open, otherwisehot water will be sent into water tank A 10 via electromagnetic valve 7when said temperature is low and the electromagnetic valve 5 is open.When the water level in tank A 10 as measured by the content gauge 11reaches a predetermined height, valve 7 is closed, and constant-openelectromagnetic valves 19 and 22 are closed, vacuum pump 32 is startedto pump air out of water tank B 18 with vacuum gauge 16 detecting thevacuum inside tank B 18, when said vacuum inside tank B reaches apredetermined value, valve 9 is open, the water inside tank A 10 goesfrom its bottom via valve 9 entering the top of tank B 18 through nozzle14 and being atomized and sprayed out, these atomized water droplets aredeaerated under the vacuum environment of tank B 18, and such deaeratedwater is accumulated in tank B 18 with water level in tank A 10decreasing until reaching a predetermined low level, then content gauge15 signals, valve 9 is closed and after pumping tank B 18 continues forabout 30 seconds, electromagnetic valves 20 and 21 are closed andelectromagnetic valves 19 and 22 are opened, then the vacuum in watertank B 18 is broken and the air in water tank A 10 is pumped out untilthe vacuum inside tank A 10 as detected by vacuum gauge 12 reaches apredetermined value, valve 8 opens, the first-time deaerated water intank B 18 goes from its bottom via valve 8 entering the top inlet oftank A 10 through nozzle 14 and being atomized and sprayed out into tankA 10, these atomized water droplets are deaerated a second time underthe vacuum environment of tank A 10, and the water level in tank B 18 asmeasured by content gauge 17 decreases until reaching a predeterminedlow level, then valve 8 is closed and after about 30 seconds,electromagnetic valves 19 and 22 are closed and electromagnetic valves20 and 21 are opened, the vacuum in tank A 10 is broken, and air insidewater tank B 18 is again pumped out with its vacuum being detected byvacuum gauge 16 until all the water returns back to tank B 18, then thecycle is jumped out with vacuum pump 32 closed, and electromagneticvalves 23 and 25 open, the water pump 28 is started to inject saidcycling-deaerated water from tank B 18 into aqueous capsule 24 for theuse in the ultrasonic focusing tumour ablation treatment. And a cushion27 for fixing the patient's body is then vacuumized by vacuum pump 32 incoordination with vacuum switching valve 29 and electromagnetic valves30 and 31.

1. A deaeration device for deaerating water used during ultrasonicfocusing tumour ablation treatment, wherein a tap water main inlet isconnected to a water purifier and a vacuum pump separately, a commonpipe for cold and heated water from the water purifier and a waterheater is connected to a water tank via electromagnetic valves, thevacuum pump is connected to the top of the water tank viaelectromagnetic valves and a vacuum switching valve, there are contentgauges, a thermometer, and vacuum gauges set on the water tank, and thebottom of the water tank is connected to an aqueous capsule viaelectromagnetic valves and a water pump, said deaeration device ischaracterized in that said vacuum pump is a water jet vacuum pump (32);said water tank is comprised of twin tanks: water tank A (10) and watertank B (18), and a water cycling mechanism with twin-tank alternatingvacuum suctions is formed by said water jet vacuum pump (32) inconnection with said water tank A (10) and water tank B (18) at theirtops via a valve assembly composed of four constant-open electromagneticvalves (19, 20, 21, 22); and two atomizing nozzles (14) are provided atthe respective water inlets on the tops of said water tank A (10) andwater tank B (18).
 2. The deaeration device for deaerating water usedduring ultrasonic focusing tumour ablation treatment according to claim1, characterized in that a high-level content gauge (11), a low-levelcontent gauge (15), a thermometer (13), and a vacuum gauge (12) beingmounted on the top of said water tank A (10), and a content gauge (17)and a vacuum gauge (16) being mounted on the top of said water tank B(18).